from www.tmz.com – Charlie Sheen will be in rehab for the next three months, derailing the next eight episodes of “Two and a Half Men” … and possibly leaving the show’s crew SOL.

Sources connected with the show tell TMZ the crew is grumbling … worried they will be the financial casualties of Charlie’s problem. There are 300 people associated with the show, many of whom are nervous about not getting a paycheck.

Sources say when production was halted last February while Charlie was in rehab, the crew was “partially compensated.”

We’re told the studio hasn’t decided what to do this time around — whether the staff will be fully or partially compensated. A decision is expected soon.